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Commit | Line | Data |
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c942fddf | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
3f86b832 | 2 | /* |
db1c291a | 3 | * sbs.c - ACPI Smart Battery System Driver ($Revision: 2.0 $) |
3f86b832 | 4 | * |
db1c291a AS |
5 | * Copyright (c) 2007 Alexey Starikovskiy <astarikovskiy@suse.de> |
6 | * Copyright (c) 2005-2007 Vladimir Lebedev <vladimir.p.lebedev@intel.com> | |
3f86b832 | 7 | * Copyright (c) 2005 Rich Townsend <rhdt@bartol.udel.edu> |
3f86b832 RT |
8 | */ |
9 | ||
10 | #include <linux/init.h> | |
5a0e3ad6 | 11 | #include <linux/slab.h> |
3f86b832 RT |
12 | #include <linux/module.h> |
13 | #include <linux/moduleparam.h> | |
14 | #include <linux/kernel.h> | |
94f6c086 | 15 | |
3f86b832 | 16 | #include <linux/acpi.h> |
6d15702c | 17 | #include <linux/timer.h> |
72206233 | 18 | #include <linux/jiffies.h> |
3f86b832 | 19 | #include <linux/delay.h> |
94f6c086 | 20 | #include <linux/power_supply.h> |
630b3aff | 21 | #include <linux/platform_data/x86/apple.h> |
fa93854f | 22 | #include <acpi/battery.h> |
94f6c086 | 23 | |
91087dfa AS |
24 | #include "sbshc.h" |
25 | ||
a192a958 LB |
26 | #define PREFIX "ACPI: " |
27 | ||
3f86b832 RT |
28 | #define ACPI_SBS_CLASS "sbs" |
29 | #define ACPI_AC_CLASS "ac_adapter" | |
3f86b832 RT |
30 | #define ACPI_SBS_DEVICE_NAME "Smart Battery System" |
31 | #define ACPI_SBS_FILE_INFO "info" | |
32 | #define ACPI_SBS_FILE_STATE "state" | |
33 | #define ACPI_SBS_FILE_ALARM "alarm" | |
34 | #define ACPI_BATTERY_DIR_NAME "BAT%i" | |
35 | #define ACPI_AC_DIR_NAME "AC0" | |
3f86b832 | 36 | |
db1c291a AS |
37 | #define ACPI_SBS_NOTIFY_STATUS 0x80 |
38 | #define ACPI_SBS_NOTIFY_INFO 0x81 | |
3f86b832 | 39 | |
db1c291a | 40 | MODULE_AUTHOR("Alexey Starikovskiy <astarikovskiy@suse.de>"); |
3f86b832 RT |
41 | MODULE_DESCRIPTION("Smart Battery System ACPI interface driver"); |
42 | MODULE_LICENSE("GPL"); | |
43 | ||
db1c291a AS |
44 | static unsigned int cache_time = 1000; |
45 | module_param(cache_time, uint, 0644); | |
46 | MODULE_PARM_DESC(cache_time, "cache time in milliseconds"); | |
6d15702c | 47 | |
db1c291a | 48 | #define MAX_SBS_BAT 4 |
6d15702c VL |
49 | #define ACPI_SBS_BLOCK_MAX 32 |
50 | ||
1ba90e3a | 51 | static const struct acpi_device_id sbs_device_ids[] = { |
91087dfa | 52 | {"ACPI0002", 0}, |
1ba90e3a TR |
53 | {"", 0}, |
54 | }; | |
55 | MODULE_DEVICE_TABLE(acpi, sbs_device_ids); | |
56 | ||
3f86b832 | 57 | struct acpi_battery { |
297d716f KK |
58 | struct power_supply *bat; |
59 | struct power_supply_desc bat_desc; | |
3f86b832 | 60 | struct acpi_sbs *sbs; |
db1c291a AS |
61 | unsigned long update_time; |
62 | char name[8]; | |
89862e3b AS |
63 | char manufacturer_name[ACPI_SBS_BLOCK_MAX]; |
64 | char device_name[ACPI_SBS_BLOCK_MAX]; | |
65 | char device_chemistry[ACPI_SBS_BLOCK_MAX]; | |
94f6c086 | 66 | u16 alarm_capacity; |
89862e3b AS |
67 | u16 full_charge_capacity; |
68 | u16 design_capacity; | |
69 | u16 design_voltage; | |
70 | u16 serial_number; | |
db1c291a AS |
71 | u16 cycle_count; |
72 | u16 temp_now; | |
89862e3b | 73 | u16 voltage_now; |
7faa144a AS |
74 | s16 rate_now; |
75 | s16 rate_avg; | |
89862e3b | 76 | u16 capacity_now; |
db1c291a | 77 | u16 state_of_charge; |
89862e3b | 78 | u16 state; |
89862e3b | 79 | u16 mode; |
db1c291a | 80 | u16 spec; |
89862e3b | 81 | u8 id; |
89862e3b | 82 | u8 present:1; |
037cbc63 | 83 | u8 have_sysfs_alarm:1; |
3f86b832 RT |
84 | }; |
85 | ||
297d716f | 86 | #define to_acpi_battery(x) power_supply_get_drvdata(x) |
94f6c086 | 87 | |
3f86b832 | 88 | struct acpi_sbs { |
297d716f | 89 | struct power_supply *charger; |
3f86b832 | 90 | struct acpi_device *device; |
91087dfa | 91 | struct acpi_smb_hc *hc; |
db1c291a | 92 | struct mutex lock; |
3f86b832 | 93 | struct acpi_battery battery[MAX_SBS_BAT]; |
db1c291a | 94 | u8 batteries_supported:4; |
89862e3b AS |
95 | u8 manager_present:1; |
96 | u8 charger_present:1; | |
3031cdde | 97 | u8 charger_exists:1; |
3f86b832 RT |
98 | }; |
99 | ||
297d716f | 100 | #define to_acpi_sbs(x) power_supply_get_drvdata(x) |
94f6c086 | 101 | |
51fac838 | 102 | static int acpi_sbs_remove(struct acpi_device *device); |
1dd5c715 LT |
103 | static int acpi_battery_get_state(struct acpi_battery *battery); |
104 | ||
db1c291a | 105 | static inline int battery_scale(int log) |
72206233 | 106 | { |
db1c291a AS |
107 | int scale = 1; |
108 | while (log--) | |
109 | scale *= 10; | |
110 | return scale; | |
72206233 VL |
111 | } |
112 | ||
db1c291a | 113 | static inline int acpi_battery_vscale(struct acpi_battery *battery) |
72206233 | 114 | { |
db1c291a | 115 | return battery_scale((battery->spec & 0x0f00) >> 8); |
72206233 VL |
116 | } |
117 | ||
db1c291a | 118 | static inline int acpi_battery_ipscale(struct acpi_battery *battery) |
72206233 | 119 | { |
db1c291a | 120 | return battery_scale((battery->spec & 0xf000) >> 12); |
72206233 VL |
121 | } |
122 | ||
db1c291a | 123 | static inline int acpi_battery_mode(struct acpi_battery *battery) |
72206233 | 124 | { |
db1c291a | 125 | return (battery->mode & 0x8000); |
72206233 | 126 | } |
3f86b832 | 127 | |
db1c291a | 128 | static inline int acpi_battery_scale(struct acpi_battery *battery) |
3f86b832 | 129 | { |
db1c291a AS |
130 | return (acpi_battery_mode(battery) ? 10 : 1) * |
131 | acpi_battery_ipscale(battery); | |
3f86b832 RT |
132 | } |
133 | ||
94f6c086 AS |
134 | static int sbs_get_ac_property(struct power_supply *psy, |
135 | enum power_supply_property psp, | |
136 | union power_supply_propval *val) | |
137 | { | |
138 | struct acpi_sbs *sbs = to_acpi_sbs(psy); | |
139 | switch (psp) { | |
140 | case POWER_SUPPLY_PROP_ONLINE: | |
141 | val->intval = sbs->charger_present; | |
142 | break; | |
143 | default: | |
144 | return -EINVAL; | |
145 | } | |
146 | return 0; | |
147 | } | |
148 | ||
149 | static int acpi_battery_technology(struct acpi_battery *battery) | |
150 | { | |
151 | if (!strcasecmp("NiCd", battery->device_chemistry)) | |
152 | return POWER_SUPPLY_TECHNOLOGY_NiCd; | |
153 | if (!strcasecmp("NiMH", battery->device_chemistry)) | |
154 | return POWER_SUPPLY_TECHNOLOGY_NiMH; | |
155 | if (!strcasecmp("LION", battery->device_chemistry)) | |
156 | return POWER_SUPPLY_TECHNOLOGY_LION; | |
157 | if (!strcasecmp("LiP", battery->device_chemistry)) | |
158 | return POWER_SUPPLY_TECHNOLOGY_LIPO; | |
159 | return POWER_SUPPLY_TECHNOLOGY_UNKNOWN; | |
160 | } | |
161 | ||
162 | static int acpi_sbs_battery_get_property(struct power_supply *psy, | |
163 | enum power_supply_property psp, | |
164 | union power_supply_propval *val) | |
165 | { | |
166 | struct acpi_battery *battery = to_acpi_battery(psy); | |
167 | ||
168 | if ((!battery->present) && psp != POWER_SUPPLY_PROP_PRESENT) | |
169 | return -ENODEV; | |
1dd5c715 LT |
170 | |
171 | acpi_battery_get_state(battery); | |
94f6c086 AS |
172 | switch (psp) { |
173 | case POWER_SUPPLY_PROP_STATUS: | |
7faa144a | 174 | if (battery->rate_now < 0) |
94f6c086 | 175 | val->intval = POWER_SUPPLY_STATUS_DISCHARGING; |
7faa144a | 176 | else if (battery->rate_now > 0) |
94f6c086 AS |
177 | val->intval = POWER_SUPPLY_STATUS_CHARGING; |
178 | else | |
179 | val->intval = POWER_SUPPLY_STATUS_FULL; | |
180 | break; | |
181 | case POWER_SUPPLY_PROP_PRESENT: | |
182 | val->intval = battery->present; | |
183 | break; | |
184 | case POWER_SUPPLY_PROP_TECHNOLOGY: | |
185 | val->intval = acpi_battery_technology(battery); | |
186 | break; | |
16698857 AS |
187 | case POWER_SUPPLY_PROP_CYCLE_COUNT: |
188 | val->intval = battery->cycle_count; | |
189 | break; | |
94f6c086 AS |
190 | case POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN: |
191 | val->intval = battery->design_voltage * | |
192 | acpi_battery_vscale(battery) * 1000; | |
193 | break; | |
194 | case POWER_SUPPLY_PROP_VOLTAGE_NOW: | |
195 | val->intval = battery->voltage_now * | |
196 | acpi_battery_vscale(battery) * 1000; | |
197 | break; | |
198 | case POWER_SUPPLY_PROP_CURRENT_NOW: | |
7faa144a AS |
199 | case POWER_SUPPLY_PROP_POWER_NOW: |
200 | val->intval = abs(battery->rate_now) * | |
94f6c086 | 201 | acpi_battery_ipscale(battery) * 1000; |
e4108292 LT |
202 | val->intval *= (acpi_battery_mode(battery)) ? |
203 | (battery->voltage_now * | |
204 | acpi_battery_vscale(battery) / 1000) : 1; | |
94f6c086 AS |
205 | break; |
206 | case POWER_SUPPLY_PROP_CURRENT_AVG: | |
7faa144a AS |
207 | case POWER_SUPPLY_PROP_POWER_AVG: |
208 | val->intval = abs(battery->rate_avg) * | |
94f6c086 | 209 | acpi_battery_ipscale(battery) * 1000; |
e4108292 LT |
210 | val->intval *= (acpi_battery_mode(battery)) ? |
211 | (battery->voltage_now * | |
212 | acpi_battery_vscale(battery) / 1000) : 1; | |
94f6c086 AS |
213 | break; |
214 | case POWER_SUPPLY_PROP_CAPACITY: | |
215 | val->intval = battery->state_of_charge; | |
216 | break; | |
217 | case POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN: | |
218 | case POWER_SUPPLY_PROP_ENERGY_FULL_DESIGN: | |
219 | val->intval = battery->design_capacity * | |
220 | acpi_battery_scale(battery) * 1000; | |
221 | break; | |
222 | case POWER_SUPPLY_PROP_CHARGE_FULL: | |
223 | case POWER_SUPPLY_PROP_ENERGY_FULL: | |
224 | val->intval = battery->full_charge_capacity * | |
225 | acpi_battery_scale(battery) * 1000; | |
226 | break; | |
227 | case POWER_SUPPLY_PROP_CHARGE_NOW: | |
228 | case POWER_SUPPLY_PROP_ENERGY_NOW: | |
229 | val->intval = battery->capacity_now * | |
230 | acpi_battery_scale(battery) * 1000; | |
231 | break; | |
232 | case POWER_SUPPLY_PROP_TEMP: | |
233 | val->intval = battery->temp_now - 2730; // dK -> dC | |
234 | break; | |
235 | case POWER_SUPPLY_PROP_MODEL_NAME: | |
236 | val->strval = battery->device_name; | |
237 | break; | |
238 | case POWER_SUPPLY_PROP_MANUFACTURER: | |
239 | val->strval = battery->manufacturer_name; | |
240 | break; | |
241 | default: | |
242 | return -EINVAL; | |
243 | } | |
244 | return 0; | |
245 | } | |
246 | ||
247 | static enum power_supply_property sbs_ac_props[] = { | |
248 | POWER_SUPPLY_PROP_ONLINE, | |
249 | }; | |
250 | ||
251 | static enum power_supply_property sbs_charge_battery_props[] = { | |
252 | POWER_SUPPLY_PROP_STATUS, | |
253 | POWER_SUPPLY_PROP_PRESENT, | |
254 | POWER_SUPPLY_PROP_TECHNOLOGY, | |
16698857 | 255 | POWER_SUPPLY_PROP_CYCLE_COUNT, |
94f6c086 AS |
256 | POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN, |
257 | POWER_SUPPLY_PROP_VOLTAGE_NOW, | |
258 | POWER_SUPPLY_PROP_CURRENT_NOW, | |
259 | POWER_SUPPLY_PROP_CURRENT_AVG, | |
260 | POWER_SUPPLY_PROP_CAPACITY, | |
261 | POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN, | |
262 | POWER_SUPPLY_PROP_CHARGE_FULL, | |
263 | POWER_SUPPLY_PROP_CHARGE_NOW, | |
264 | POWER_SUPPLY_PROP_TEMP, | |
265 | POWER_SUPPLY_PROP_MODEL_NAME, | |
266 | POWER_SUPPLY_PROP_MANUFACTURER, | |
267 | }; | |
268 | ||
269 | static enum power_supply_property sbs_energy_battery_props[] = { | |
270 | POWER_SUPPLY_PROP_STATUS, | |
271 | POWER_SUPPLY_PROP_PRESENT, | |
272 | POWER_SUPPLY_PROP_TECHNOLOGY, | |
273 | POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN, | |
274 | POWER_SUPPLY_PROP_VOLTAGE_NOW, | |
275 | POWER_SUPPLY_PROP_CURRENT_NOW, | |
276 | POWER_SUPPLY_PROP_CURRENT_AVG, | |
7faa144a AS |
277 | POWER_SUPPLY_PROP_POWER_NOW, |
278 | POWER_SUPPLY_PROP_POWER_AVG, | |
94f6c086 AS |
279 | POWER_SUPPLY_PROP_CAPACITY, |
280 | POWER_SUPPLY_PROP_ENERGY_FULL_DESIGN, | |
281 | POWER_SUPPLY_PROP_ENERGY_FULL, | |
282 | POWER_SUPPLY_PROP_ENERGY_NOW, | |
283 | POWER_SUPPLY_PROP_TEMP, | |
284 | POWER_SUPPLY_PROP_MODEL_NAME, | |
285 | POWER_SUPPLY_PROP_MANUFACTURER, | |
286 | }; | |
7faa144a | 287 | |
297d716f KK |
288 | static const struct power_supply_desc acpi_sbs_charger_desc = { |
289 | .name = "sbs-charger", | |
290 | .type = POWER_SUPPLY_TYPE_MAINS, | |
291 | .properties = sbs_ac_props, | |
292 | .num_properties = ARRAY_SIZE(sbs_ac_props), | |
293 | .get_property = sbs_get_ac_property, | |
294 | }; | |
94f6c086 | 295 | |
db1c291a AS |
296 | /* -------------------------------------------------------------------------- |
297 | Smart Battery System Management | |
298 | -------------------------------------------------------------------------- */ | |
3f86b832 | 299 | |
db1c291a AS |
300 | struct acpi_battery_reader { |
301 | u8 command; /* command for battery */ | |
302 | u8 mode; /* word or block? */ | |
303 | size_t offset; /* offset inside struct acpi_sbs_battery */ | |
304 | }; | |
3f86b832 | 305 | |
db1c291a AS |
306 | static struct acpi_battery_reader info_readers[] = { |
307 | {0x01, SMBUS_READ_WORD, offsetof(struct acpi_battery, alarm_capacity)}, | |
308 | {0x03, SMBUS_READ_WORD, offsetof(struct acpi_battery, mode)}, | |
309 | {0x10, SMBUS_READ_WORD, offsetof(struct acpi_battery, full_charge_capacity)}, | |
310 | {0x17, SMBUS_READ_WORD, offsetof(struct acpi_battery, cycle_count)}, | |
311 | {0x18, SMBUS_READ_WORD, offsetof(struct acpi_battery, design_capacity)}, | |
312 | {0x19, SMBUS_READ_WORD, offsetof(struct acpi_battery, design_voltage)}, | |
313 | {0x1a, SMBUS_READ_WORD, offsetof(struct acpi_battery, spec)}, | |
314 | {0x1c, SMBUS_READ_WORD, offsetof(struct acpi_battery, serial_number)}, | |
315 | {0x20, SMBUS_READ_BLOCK, offsetof(struct acpi_battery, manufacturer_name)}, | |
316 | {0x21, SMBUS_READ_BLOCK, offsetof(struct acpi_battery, device_name)}, | |
317 | {0x22, SMBUS_READ_BLOCK, offsetof(struct acpi_battery, device_chemistry)}, | |
318 | }; | |
3f86b832 | 319 | |
db1c291a AS |
320 | static struct acpi_battery_reader state_readers[] = { |
321 | {0x08, SMBUS_READ_WORD, offsetof(struct acpi_battery, temp_now)}, | |
322 | {0x09, SMBUS_READ_WORD, offsetof(struct acpi_battery, voltage_now)}, | |
7faa144a AS |
323 | {0x0a, SMBUS_READ_WORD, offsetof(struct acpi_battery, rate_now)}, |
324 | {0x0b, SMBUS_READ_WORD, offsetof(struct acpi_battery, rate_avg)}, | |
db1c291a AS |
325 | {0x0f, SMBUS_READ_WORD, offsetof(struct acpi_battery, capacity_now)}, |
326 | {0x0e, SMBUS_READ_WORD, offsetof(struct acpi_battery, state_of_charge)}, | |
327 | {0x16, SMBUS_READ_WORD, offsetof(struct acpi_battery, state)}, | |
328 | }; | |
3f86b832 | 329 | |
db1c291a | 330 | static int acpi_manager_get_info(struct acpi_sbs *sbs) |
3f86b832 | 331 | { |
3f86b832 | 332 | int result = 0; |
db1c291a | 333 | u16 battery_system_info; |
3f86b832 | 334 | |
db1c291a | 335 | result = acpi_smbus_read(sbs->hc, SMBUS_READ_WORD, ACPI_SBS_MANAGER, |
94f6c086 | 336 | 0x04, (u8 *)&battery_system_info); |
db1c291a AS |
337 | if (!result) |
338 | sbs->batteries_supported = battery_system_info & 0x000f; | |
635227ee | 339 | return result; |
3f86b832 RT |
340 | } |
341 | ||
342 | static int acpi_battery_get_info(struct acpi_battery *battery) | |
343 | { | |
db1c291a | 344 | int i, result = 0; |
3f86b832 | 345 | |
db1c291a | 346 | for (i = 0; i < ARRAY_SIZE(info_readers); ++i) { |
94f6c086 AS |
347 | result = acpi_smbus_read(battery->sbs->hc, |
348 | info_readers[i].mode, | |
349 | ACPI_SBS_BATTERY, | |
350 | info_readers[i].command, | |
351 | (u8 *) battery + | |
352 | info_readers[i].offset); | |
db1c291a AS |
353 | if (result) |
354 | break; | |
3f86b832 | 355 | } |
635227ee | 356 | return result; |
3f86b832 RT |
357 | } |
358 | ||
3f86b832 RT |
359 | static int acpi_battery_get_state(struct acpi_battery *battery) |
360 | { | |
db1c291a | 361 | int i, result = 0; |
3f86b832 | 362 | |
94f6c086 AS |
363 | if (battery->update_time && |
364 | time_before(jiffies, battery->update_time + | |
db1c291a AS |
365 | msecs_to_jiffies(cache_time))) |
366 | return 0; | |
367 | for (i = 0; i < ARRAY_SIZE(state_readers); ++i) { | |
368 | result = acpi_smbus_read(battery->sbs->hc, | |
369 | state_readers[i].mode, | |
370 | ACPI_SBS_BATTERY, | |
371 | state_readers[i].command, | |
372 | (u8 *)battery + | |
373 | state_readers[i].offset); | |
374 | if (result) | |
3f86b832 | 375 | goto end; |
3f86b832 | 376 | } |
3f86b832 | 377 | end: |
db1c291a | 378 | battery->update_time = jiffies; |
635227ee | 379 | return result; |
3f86b832 RT |
380 | } |
381 | ||
db1c291a | 382 | static int acpi_battery_get_alarm(struct acpi_battery *battery) |
3f86b832 | 383 | { |
db1c291a AS |
384 | return acpi_smbus_read(battery->sbs->hc, SMBUS_READ_WORD, |
385 | ACPI_SBS_BATTERY, 0x01, | |
94f6c086 | 386 | (u8 *)&battery->alarm_capacity); |
3f86b832 RT |
387 | } |
388 | ||
db1c291a | 389 | static int acpi_battery_set_alarm(struct acpi_battery *battery) |
3f86b832 | 390 | { |
db1c291a | 391 | struct acpi_sbs *sbs = battery->sbs; |
94f6c086 AS |
392 | u16 value, sel = 1 << (battery->id + 12); |
393 | ||
394 | int ret; | |
395 | ||
3f86b832 | 396 | |
db1c291a | 397 | if (sbs->manager_present) { |
94f6c086 | 398 | ret = acpi_smbus_read(sbs->hc, SMBUS_READ_WORD, ACPI_SBS_MANAGER, |
db1c291a | 399 | 0x01, (u8 *)&value); |
94f6c086 AS |
400 | if (ret) |
401 | goto end; | |
402 | if ((value & 0xf000) != sel) { | |
403 | value &= 0x0fff; | |
404 | value |= sel; | |
a84bc8cf | 405 | ret = acpi_smbus_write(sbs->hc, SMBUS_WRITE_WORD, |
94f6c086 AS |
406 | ACPI_SBS_MANAGER, |
407 | 0x01, (u8 *)&value, 2); | |
a84bc8cf CIK |
408 | if (ret) |
409 | goto end; | |
94f6c086 | 410 | } |
3f86b832 | 411 | } |
94f6c086 AS |
412 | ret = acpi_smbus_write(sbs->hc, SMBUS_WRITE_WORD, ACPI_SBS_BATTERY, |
413 | 0x01, (u8 *)&battery->alarm_capacity, 2); | |
414 | end: | |
415 | return ret; | |
3f86b832 RT |
416 | } |
417 | ||
418 | static int acpi_ac_get_present(struct acpi_sbs *sbs) | |
419 | { | |
db1c291a AS |
420 | int result; |
421 | u16 status; | |
3f86b832 | 422 | |
db1c291a AS |
423 | result = acpi_smbus_read(sbs->hc, SMBUS_READ_WORD, ACPI_SBS_CHARGER, |
424 | 0x13, (u8 *) & status); | |
3031cdde MG |
425 | |
426 | if (result) | |
427 | return result; | |
428 | ||
429 | /* | |
430 | * The spec requires that bit 4 always be 1. If it's not set, assume | |
ca1721c5 RT |
431 | * that the implementation doesn't support an SBS charger. |
432 | * | |
433 | * And on some MacBooks a status of 0xffff is always returned, no | |
434 | * matter whether the charger is plugged in or not, which is also | |
435 | * wrong, so ignore the SBS charger for those too. | |
3031cdde | 436 | */ |
ca1721c5 | 437 | if (!((status >> 4) & 0x1) || status == 0xffff) |
3031cdde MG |
438 | return -ENODEV; |
439 | ||
440 | sbs->charger_present = (status >> 15) & 0x1; | |
441 | return 0; | |
3f86b832 RT |
442 | } |
443 | ||
8bd95532 AS |
444 | static ssize_t acpi_battery_alarm_show(struct device *dev, |
445 | struct device_attribute *attr, | |
446 | char *buf) | |
447 | { | |
448 | struct acpi_battery *battery = to_acpi_battery(dev_get_drvdata(dev)); | |
449 | acpi_battery_get_alarm(battery); | |
450 | return sprintf(buf, "%d\n", battery->alarm_capacity * | |
451 | acpi_battery_scale(battery) * 1000); | |
452 | } | |
453 | ||
454 | static ssize_t acpi_battery_alarm_store(struct device *dev, | |
455 | struct device_attribute *attr, | |
456 | const char *buf, size_t count) | |
457 | { | |
458 | unsigned long x; | |
459 | struct acpi_battery *battery = to_acpi_battery(dev_get_drvdata(dev)); | |
32a90512 | 460 | if (sscanf(buf, "%lu\n", &x) == 1) |
8bd95532 AS |
461 | battery->alarm_capacity = x / |
462 | (1000 * acpi_battery_scale(battery)); | |
463 | if (battery->present) | |
464 | acpi_battery_set_alarm(battery); | |
465 | return count; | |
466 | } | |
467 | ||
82d2b610 | 468 | static const struct device_attribute alarm_attr = { |
01e8ef11 | 469 | .attr = {.name = "alarm", .mode = 0644}, |
8bd95532 AS |
470 | .show = acpi_battery_alarm_show, |
471 | .store = acpi_battery_alarm_store, | |
472 | }; | |
473 | ||
3f86b832 RT |
474 | /* -------------------------------------------------------------------------- |
475 | Driver Interface | |
476 | -------------------------------------------------------------------------- */ | |
db1c291a | 477 | static int acpi_battery_read(struct acpi_battery *battery) |
3f86b832 | 478 | { |
db1c291a AS |
479 | int result = 0, saved_present = battery->present; |
480 | u16 state; | |
3f86b832 | 481 | |
db1c291a AS |
482 | if (battery->sbs->manager_present) { |
483 | result = acpi_smbus_read(battery->sbs->hc, SMBUS_READ_WORD, | |
484 | ACPI_SBS_MANAGER, 0x01, (u8 *)&state); | |
485 | if (!result) | |
486 | battery->present = state & (1 << battery->id); | |
487 | state &= 0x0fff; | |
488 | state |= 1 << (battery->id + 12); | |
489 | acpi_smbus_write(battery->sbs->hc, SMBUS_WRITE_WORD, | |
490 | ACPI_SBS_MANAGER, 0x01, (u8 *)&state, 2); | |
491 | } else if (battery->id == 0) | |
492 | battery->present = 1; | |
9faf6136 | 493 | |
db1c291a AS |
494 | if (result || !battery->present) |
495 | return result; | |
3f86b832 | 496 | |
db1c291a AS |
497 | if (saved_present != battery->present) { |
498 | battery->update_time = 0; | |
499 | result = acpi_battery_get_info(battery); | |
9faf6136 MG |
500 | if (result) { |
501 | battery->present = 0; | |
db1c291a | 502 | return result; |
9faf6136 | 503 | } |
db1c291a AS |
504 | } |
505 | result = acpi_battery_get_state(battery); | |
9faf6136 MG |
506 | if (result) |
507 | battery->present = 0; | |
db1c291a AS |
508 | return result; |
509 | } | |
3f86b832 | 510 | |
94f6c086 | 511 | /* Smart Battery */ |
db1c291a AS |
512 | static int acpi_battery_add(struct acpi_sbs *sbs, int id) |
513 | { | |
db1c291a | 514 | struct acpi_battery *battery = &sbs->battery[id]; |
297d716f | 515 | struct power_supply_config psy_cfg = { .drv_data = battery, }; |
94f6c086 AS |
516 | int result; |
517 | ||
3f86b832 RT |
518 | battery->id = id; |
519 | battery->sbs = sbs; | |
db1c291a AS |
520 | result = acpi_battery_read(battery); |
521 | if (result) | |
522 | return result; | |
3f86b832 | 523 | |
db1c291a | 524 | sprintf(battery->name, ACPI_BATTERY_DIR_NAME, id); |
297d716f KK |
525 | battery->bat_desc.name = battery->name; |
526 | battery->bat_desc.type = POWER_SUPPLY_TYPE_BATTERY; | |
94f6c086 | 527 | if (!acpi_battery_mode(battery)) { |
297d716f KK |
528 | battery->bat_desc.properties = sbs_charge_battery_props; |
529 | battery->bat_desc.num_properties = | |
94f6c086 AS |
530 | ARRAY_SIZE(sbs_charge_battery_props); |
531 | } else { | |
297d716f KK |
532 | battery->bat_desc.properties = sbs_energy_battery_props; |
533 | battery->bat_desc.num_properties = | |
94f6c086 AS |
534 | ARRAY_SIZE(sbs_energy_battery_props); |
535 | } | |
297d716f KK |
536 | battery->bat_desc.get_property = acpi_sbs_battery_get_property; |
537 | battery->bat = power_supply_register(&sbs->device->dev, | |
538 | &battery->bat_desc, &psy_cfg); | |
539 | if (IS_ERR(battery->bat)) { | |
540 | result = PTR_ERR(battery->bat); | |
541 | battery->bat = NULL; | |
037cbc63 | 542 | goto end; |
297d716f | 543 | } |
9faf6136 | 544 | |
297d716f | 545 | result = device_create_file(&battery->bat->dev, &alarm_attr); |
037cbc63 JG |
546 | if (result) |
547 | goto end; | |
548 | battery->have_sysfs_alarm = 1; | |
549 | end: | |
72206233 | 550 | printk(KERN_INFO PREFIX "%s [%s]: Battery Slot [%s] (battery %s)\n", |
db1c291a | 551 | ACPI_SBS_DEVICE_NAME, acpi_device_bid(sbs->device), |
bbafbecb | 552 | battery->name, battery->present ? "present" : "absent"); |
635227ee | 553 | return result; |
3f86b832 RT |
554 | } |
555 | ||
556 | static void acpi_battery_remove(struct acpi_sbs *sbs, int id) | |
557 | { | |
037cbc63 | 558 | struct acpi_battery *battery = &sbs->battery[id]; |
c19bdb61 | 559 | |
297d716f | 560 | if (battery->bat) { |
037cbc63 | 561 | if (battery->have_sysfs_alarm) |
297d716f KK |
562 | device_remove_file(&battery->bat->dev, &alarm_attr); |
563 | power_supply_unregister(battery->bat); | |
3f86b832 RT |
564 | } |
565 | } | |
566 | ||
db1c291a | 567 | static int acpi_charger_add(struct acpi_sbs *sbs) |
3f86b832 RT |
568 | { |
569 | int result; | |
297d716f | 570 | struct power_supply_config psy_cfg = { .drv_data = sbs, }; |
3f86b832 | 571 | |
3f86b832 | 572 | result = acpi_ac_get_present(sbs); |
db1c291a | 573 | if (result) |
3f86b832 | 574 | goto end; |
2a68b995 | 575 | |
3031cdde | 576 | sbs->charger_exists = 1; |
297d716f KK |
577 | sbs->charger = power_supply_register(&sbs->device->dev, |
578 | &acpi_sbs_charger_desc, &psy_cfg); | |
579 | if (IS_ERR(sbs->charger)) { | |
580 | result = PTR_ERR(sbs->charger); | |
581 | sbs->charger = NULL; | |
582 | } | |
72206233 VL |
583 | printk(KERN_INFO PREFIX "%s [%s]: AC Adapter [%s] (%s)\n", |
584 | ACPI_SBS_DEVICE_NAME, acpi_device_bid(sbs->device), | |
89862e3b | 585 | ACPI_AC_DIR_NAME, sbs->charger_present ? "on-line" : "off-line"); |
3f86b832 | 586 | end: |
635227ee | 587 | return result; |
3f86b832 RT |
588 | } |
589 | ||
db1c291a | 590 | static void acpi_charger_remove(struct acpi_sbs *sbs) |
3f86b832 | 591 | { |
297d716f KK |
592 | if (sbs->charger) |
593 | power_supply_unregister(sbs->charger); | |
3f86b832 RT |
594 | } |
595 | ||
e5685b9d | 596 | static void acpi_sbs_callback(void *context) |
3f86b832 | 597 | { |
db1c291a AS |
598 | int id; |
599 | struct acpi_sbs *sbs = context; | |
600 | struct acpi_battery *bat; | |
601 | u8 saved_charger_state = sbs->charger_present; | |
602 | u8 saved_battery_state; | |
3031cdde MG |
603 | |
604 | if (sbs->charger_exists) { | |
605 | acpi_ac_get_present(sbs); | |
606 | if (sbs->charger_present != saved_charger_state) | |
297d716f | 607 | kobject_uevent(&sbs->charger->dev.kobj, KOBJ_CHANGE); |
3031cdde | 608 | } |
1696d9dc | 609 | |
db1c291a AS |
610 | if (sbs->manager_present) { |
611 | for (id = 0; id < MAX_SBS_BAT; ++id) { | |
612 | if (!(sbs->batteries_supported & (1 << id))) | |
613 | continue; | |
614 | bat = &sbs->battery[id]; | |
615 | saved_battery_state = bat->present; | |
616 | acpi_battery_read(bat); | |
617 | if (saved_battery_state == bat->present) | |
618 | continue; | |
297d716f | 619 | kobject_uevent(&bat->bat->dev.kobj, KOBJ_CHANGE); |
3f86b832 | 620 | } |
3f86b832 | 621 | } |
3f86b832 RT |
622 | } |
623 | ||
3f86b832 RT |
624 | static int acpi_sbs_add(struct acpi_device *device) |
625 | { | |
db1c291a AS |
626 | struct acpi_sbs *sbs; |
627 | int result = 0; | |
6d15702c | 628 | int id; |
3f86b832 | 629 | |
36bcbec7 | 630 | sbs = kzalloc(sizeof(struct acpi_sbs), GFP_KERNEL); |
3f86b832 | 631 | if (!sbs) { |
72206233 VL |
632 | result = -ENOMEM; |
633 | goto end; | |
3f86b832 | 634 | } |
3f86b832 | 635 | |
db1c291a | 636 | mutex_init(&sbs->lock); |
72206233 | 637 | |
91087dfa | 638 | sbs->hc = acpi_driver_data(device->parent); |
db1c291a | 639 | sbs->device = device; |
3f86b832 RT |
640 | strcpy(acpi_device_name(device), ACPI_SBS_DEVICE_NAME); |
641 | strcpy(acpi_device_class(device), ACPI_SBS_CLASS); | |
db89b4f0 | 642 | device->driver_data = sbs; |
3f86b832 | 643 | |
db1c291a | 644 | result = acpi_charger_add(sbs); |
3031cdde | 645 | if (result && result != -ENODEV) |
72206233 | 646 | goto end; |
3f86b832 | 647 | |
9faf6136 MG |
648 | result = 0; |
649 | ||
630b3aff | 650 | if (!x86_apple_machine) { |
9faf6136 MG |
651 | result = acpi_manager_get_info(sbs); |
652 | if (!result) { | |
61f8ff69 | 653 | sbs->manager_present = 1; |
9faf6136 MG |
654 | for (id = 0; id < MAX_SBS_BAT; ++id) |
655 | if ((sbs->batteries_supported & (1 << id))) | |
656 | acpi_battery_add(sbs, id); | |
657 | } | |
658 | } | |
659 | ||
660 | if (!sbs->manager_present) | |
db1c291a | 661 | acpi_battery_add(sbs, 0); |
9faf6136 | 662 | |
db1c291a | 663 | acpi_smbus_register_callback(sbs->hc, acpi_sbs_callback, sbs); |
3f86b832 | 664 | end: |
db1c291a | 665 | if (result) |
51fac838 | 666 | acpi_sbs_remove(device); |
635227ee | 667 | return result; |
3f86b832 RT |
668 | } |
669 | ||
51fac838 | 670 | static int acpi_sbs_remove(struct acpi_device *device) |
3f86b832 | 671 | { |
cece9014 | 672 | struct acpi_sbs *sbs; |
3f86b832 RT |
673 | int id; |
674 | ||
db1c291a | 675 | if (!device) |
963497c1 | 676 | return -EINVAL; |
72206233 | 677 | sbs = acpi_driver_data(device); |
db1c291a | 678 | if (!sbs) |
635227ee | 679 | return -EINVAL; |
db1c291a AS |
680 | mutex_lock(&sbs->lock); |
681 | acpi_smbus_unregister_callback(sbs->hc); | |
682 | for (id = 0; id < MAX_SBS_BAT; ++id) | |
3f86b832 | 683 | acpi_battery_remove(sbs, id); |
db1c291a AS |
684 | acpi_charger_remove(sbs); |
685 | mutex_unlock(&sbs->lock); | |
686 | mutex_destroy(&sbs->lock); | |
3f86b832 | 687 | kfree(sbs); |
635227ee | 688 | return 0; |
3f86b832 RT |
689 | } |
690 | ||
90692404 | 691 | #ifdef CONFIG_PM_SLEEP |
d202f77d | 692 | static int acpi_sbs_resume(struct device *dev) |
72206233 VL |
693 | { |
694 | struct acpi_sbs *sbs; | |
d202f77d | 695 | if (!dev) |
72206233 | 696 | return -EINVAL; |
d202f77d | 697 | sbs = to_acpi_device(dev)->driver_data; |
db1c291a | 698 | acpi_sbs_callback(sbs); |
72206233 VL |
699 | return 0; |
700 | } | |
15029dd7 SK |
701 | #else |
702 | #define acpi_sbs_resume NULL | |
90692404 | 703 | #endif |
72206233 | 704 | |
d202f77d RW |
705 | static SIMPLE_DEV_PM_OPS(acpi_sbs_pm, NULL, acpi_sbs_resume); |
706 | ||
94f6c086 AS |
707 | static struct acpi_driver acpi_sbs_driver = { |
708 | .name = "sbs", | |
709 | .class = ACPI_SBS_CLASS, | |
710 | .ids = sbs_device_ids, | |
711 | .ops = { | |
712 | .add = acpi_sbs_add, | |
713 | .remove = acpi_sbs_remove, | |
94f6c086 | 714 | }, |
d202f77d | 715 | .drv.pm = &acpi_sbs_pm, |
94f6c086 AS |
716 | }; |
717 | ||
3f86b832 RT |
718 | static int __init acpi_sbs_init(void) |
719 | { | |
720 | int result = 0; | |
721 | ||
b20d2aeb LB |
722 | if (acpi_disabled) |
723 | return -ENODEV; | |
2a68b995 | 724 | |
3f86b832 | 725 | result = acpi_bus_register_driver(&acpi_sbs_driver); |
2a68b995 | 726 | if (result < 0) |
635227ee | 727 | return -ENODEV; |
2a68b995 | 728 | |
635227ee | 729 | return 0; |
3f86b832 RT |
730 | } |
731 | ||
732 | static void __exit acpi_sbs_exit(void) | |
733 | { | |
3f86b832 | 734 | acpi_bus_unregister_driver(&acpi_sbs_driver); |
635227ee | 735 | return; |
3f86b832 RT |
736 | } |
737 | ||
738 | module_init(acpi_sbs_init); | |
739 | module_exit(acpi_sbs_exit); |